extrusive rock-is igneous rock formed by lava that erupted from the earths surface. intrusive rock-igneous rock that formed when magma hardened beneath the earths surface. porphpyritic texture-a rock with large crystals scattered on a background of much smaller crystals. sediment-small solid pieces of material that come from rocks or other living things.
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Vocabulary
extrusive rock-is igneous rock formed by lava that erupted from the earths surface.
intrusive rock-igneous rock that formed when magma hardened beneath the earths surface.
porphpyritic texture-a rock with large crystals scattered on a background of much smaller crystals.
sediment-small solid pieces of material that come from rocks or other living things.